GMC 2012 Canyon Owner's Manual page 285

The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of fires caused by electrical
problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
you replace a bad fuse with a new
one of the identical size and rating.
If you ever have a problem on the
road and do not have a spare fuse,
you can borrow one that has the
same amperage. Just pick some
feature of the vehicle that you can
get along without like the radio or
cigarette lighter and use its fuse,
if it is the correct amperage.
Replace it as soon as you can.
The engine compartment fuse block
is located on the driver side of the
engine compartment. See
for more information
on location.
To remove the cover, push in on the
tab on the end of the cover and lift.
To reinstall the cover, line up the tab
and push down on the cover until
the tab clicks into place.